Filters








750 Hits in 7.3 sec

A Space-Time Block Coded Multiuser MIMO Downlink Transmission Scheme

Yi Hong, Emanuele Viterbo, Jean-claude Belfiore
2006 2006 IEEE International Symposium on Information Theory  
In this paper, we consider the downlink of a space time block coded multiuser multiple-input multiple-output (MIMO) system.  ...  For this, threaded algebraic space-time block codes and perfect space-time block codes are employed. Different spreading matrices are used to separate the data streams of multiple users.  ...  Space-time block codes (STBCs) attract a lot interests due to the low complexity of linear decoding, full diversity gain, and high transmission rates with low delay.  ... 
doi:10.1109/isit.2006.261845 dblp:conf/isit/0001VB06 fatcat:kjahaoa7fzg3njfsfsszgxbxvq

A Low Complexity Space-Time Block Codes Detection for Cell-Free Massive MIMO Systems [article]

A. Mazhari Saray, J. Pourrostam, S. H. Mousavi, M. Mohassel Feghhi
2020 arXiv   pre-print
In this paper, the performance of the multiuser cell-free massive MIMO-system exploying space-time block codes in the uplink, and with linear decoders is studied.  ...  For this purpose, each user has two antennas, and also for improving the diversity gain performance, space-time block codes are used in the uplink.  ...  CONCLUSION In this paper the performance of multiuser cell-free massive MIMO system with dual-antenna users using space-time block codes in terms of BER and spectral efficiency with linear decoders, ZF  ... 
arXiv:2004.00405v1 fatcat:obbuvxxsmzdddfyrha3bwtwuze

OFDMA/SC-FDMA Aided Space–Time Shift Keying for Dispersive Multiuser Scenarios

Mohammad Ismat Kadir, Shinya Sugiura, Jiayi Zhang, Sheng Chen, Lajos Hanzo
2013 IEEE Transactions on Vehicular Technology  
high-capacity multiuser MIMO systems.  ...  Furthermore, the scheme has the inherent potential of benefitting from the low-complexity single-stream maximum-likelihood detector.  ...  Khan for his valuable assistance and the two institutions CDTA in Algeria and FQRNT in Canada for their funding.  ... 
doi:10.1109/tvt.2012.2220794 fatcat:6w4sbnuwevelpdbxmrey6y7f2y

Editorial

Luc Vandendorpe, Alex M. Haimovich, Ramesh Pyndiah
2005 EURASIP Journal on Advances in Signal Processing  
Babich et al. give a low-complexity method to optimize the puncturing pattern for rate-compatible punctured turbo codes.  ...  The first group of papers deals with turbo codes and ways to improve their performance. In "Iterative decoding of concatenated codes: A tutorial," P. A.  ...  The application of turbo codes to space-time coding is investigated in "System performance of concatenated STBC and block turbo codes in dispersive fading channels" by Y. Du and K. T. Chan.  ... 
doi:10.1155/asp.2005.759 fatcat:2bavylfqvbacdgfj5xkttz6fe4

Editorial

Erdal Panayırcı, Costas Georghiades, Xiaodong Wang, Hakan A Çırpan
2005 EURASIP Journal on Wireless Communications and Networking  
techniques employed in advanced wireless communication systems, such as OFDM/OFDMA, space-time-frequency coding, MIMO, CDMA, and multiuser detection in timeand frequency-selective MIMO channels.  ...  The statistical tools implemented by the advanced signal processing techniques above provide promising new routes for the design of low-complexity signal processing techniques with performance approaching  ...  The fifth paper, "Adaptive space-time-spreading-assisted wideband CDMA systems communicating over dispersive Nakagami-m fading channels" by L.  ... 
doi:10.1155/wcn.2005.79 fatcat:rhphaarogjbqdjldqbqa6syxim

Iterative Multiuser Detection and Decoding for DS-CDMA System With Space-Time Linear Dispersion

Pei Xiao, Jinsong Wu, M. Sellathurai, T. Ratnarajah, E.G. Strom
2009 IEEE Transactions on Vehicular Technology  
This paper considers a Q-ary orthogonal DS-CDMA system with high rate space-time linear dispersion codes (LDC) in time-varying Rayleigh fading MIMO channels.  ...  Index Terms: code division multiple access, MIMO, linear dispersion codes, iterative detection and decoding, multi-user detection.  ...  INTRODUCTION In this paper, we study a Q-ary orthogonally modulated DS-CDMA system which employ high-rate space-time linear dispersion code and an iterative detection and decoding receiver.  ... 
doi:10.1109/tvt.2008.2008652 fatcat:djged5oo2bbufj6jz3vyxwbgba

Unified MIMO-Multicarrier Designs: A Space–Time Shift Keying Approach

Mohammad Ismat Kadir, Shinya Sugiura, Sheng Chen, Lajos Hanzo
2015 IEEE Communications Surveys and Tutorials  
Index Terms-Multiple-input multiple-output (MIMO), linear dispersion code (LDC), spatial modulation (SM), space-time shift keying (STSK), orthogonal frequency-division multiplexing (OFDM), multicarrier  ...  A survey and tutorial is provided on the subject of multiple-input-multiple-output (MIMO) multicarrier (MC) systems relying on the space-time shift keying (STSK) concept.  ...  Motivated by this constraint, linear dispersion codes (LDCs) were proposed in [4] , [5] for striking a flexible DMT.  ... 
doi:10.1109/comst.2014.2375321 fatcat:iuozclpzqrbbzhjr4uu2rcc52a

Suboptimum receiver interfaces and space-time codes

E. Biglieri, A. Nordio, G. Taricco
2003 IEEE Transactions on Signal Processing  
We compare suboptimum linear and nonlinear interfaces to be used for decoding space-time codes transmitted over a multiple-antenna Rayleigh fading channel with perfect channelstate information available  ...  We introduce a new simple iterative linear interface, based on hard Viterbi decoding and offering a performance considerably improved with respect to noniterative receivers.  ...  DECODING WITH MULTIPLE ANTENNAS We consider a radio system with transmit and receive antennas ( ). Assume that a space-time code [16] is used, whose block length is .  ... 
doi:10.1109/tsp.2003.818370 fatcat:wc7ri7gcizatnaqi7rboboio4y

Fast Optimal Decoding of Multiplexed Orthogonal Designs by Conditional Optimization

Songsri Sirianunpiboon, Yiyue Wu, A. Robert Calderbank, Stephen D. Howard
2010 IEEE Transactions on Information Theory  
The methods are applied to several block space-time codes obtained by multiplexing Alamouti blocks where it leads to ML decoding with complexity O(N 2 ) where N is the size of the underlying QAM signal  ...  This paper focuses on conditional optimization as a decoding primitive for high rate space-time codes that are obtained by multiplexing in the spatial and code domains.  ...  We start by considering a general linear dispersion code (LDC) [18] (38) where is a set of matrices with complex entries and the are real symbols.  ... 
doi:10.1109/tit.2009.2039069 fatcat:z7zotzbrvfcu7b3alzmoytztb4

On URLLC Downlink Transmission Modes for MEC Task Offloading

Jinfei Wang, Yi Ma, Na Yi, Rahim Tafazolli
2020 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)  
On the other hand, FDD takes the advantage of having more temporal DoF in the downlink, which can be exchanged into the spatial diversity-gain through the use of space-time coding.  ...  Multi-access edge computing for mobile computingtask offloading is driving the extreme utilization of available degrees of freedom (DoF) for ultra-reliable low-latency downlink communications.  ...  coded OFDM systems with the channel frequency-selectivity.  ... 
doi:10.1109/vtc2020-spring48590.2020.9129054 dblp:conf/vtc/Wang0YT20 fatcat:xxp7fbfkxjb2bni4f42gct362e

Multicarrier Block-Spread CDMA for Broadband Cellular Downlink

Frederik Petré, Geert Leus, Marc Moonen, Hugo De Man
2004 EURASIP Journal on Advances in Signal Processing  
To improve the performance over multi-input multi-output (MIMO) multipath fading channels, our MCBS-CDMA transceiver combines well with space-time block-coding (STBC) techniques, to exploit both multiantenna  ...  These properties allow for deterministic MUI elimination through low-complexity block despreading and enable full diversity gains, irrespective of the system load.  ...  Joint linear equalization and decoding Linear equalizers that perform joint equalization and decoding combine a low complexity with medium performance.  ... 
doi:10.1155/s1110865704401048 fatcat:5glpy75h4zgj3jbodtdwwadquq

Multiple-antenna techniques for wireless communications - a comprehensive literature survey

Jan Mietzner, Robert Schober, Lutz Lampe, Wolfgang Gerstacker, Peter Hoeher
2009 IEEE Communications Surveys and Tutorials  
In particular, topics such as transmitter and receiver structures, channel coding, MIMO techniques for frequency-selective fading channels, diversity reception and space-time coding techniques, differential  ...  With an enormous amount of yearly publications, the field of multiple-antenna systems, often called multiple-input multiple-output (MIMO) systems, has evolved rapidly.  ...  For example, high-rate space-time codes that are linear in space and time, so-called linear dispersion codes, were proposed in [87] .  ... 
doi:10.1109/surv.2009.090207 fatcat:ki2ponfnp5ditjjbp7bsx5ncfm

Single-antenna blind receiver for multiuser detection in unknown correlated noise

S. Buzzi, H.V. Poor
2002 IEEE Transactions on Vehicular Technology  
The problem of blind multiuser detection for direct-sequence code-division multiple-access systems operating over fading dispersive channels and in the presence of additive Gaussian noise with unknown  ...  A new method, which enables blind multiuser detection in correlated noise with just one antenna (and thus can be implemented in mobile transceivers), is proposed here.  ...  INTRODUCTION Multiuser detection strategies for direct-sequence code-division multiple-access (DS/CDMA) systems have been extensively investigated [1] .  ... 
doi:10.1109/25.992081 fatcat:432less6fjbhplzdzsdegusjvm

Chip-interleaved block-spread code division multiple access

Shengli Zhou, G.B. Giannakis, C. Le Martret
2002 IEEE Transactions on Communications  
As a result, deterministic multiuser separation with low-complexity code-matched filtering becomes possible without loss of maximum likelihood optimality.  ...  A novel multiuser-interference (MUI)-free code division multiple access (CDMA) transceiver for frequency-selective multipath channels is developed in this paper.  ...  Therefore, with the low-complexity multiuser separating front-end, we recognize that schemes developed for single-user systems can be applied directly to multiuser scenarios.  ... 
doi:10.1109/26.983320 fatcat:nx5sz2poujf5zjqxmyrh7sv6u4

MC-CDMA aided multi-user space-time shift keying in wideband channels

Mohammad Ismat Kadir, Shinya Sugiura, Sheng Chen, Lajos Hanzo
2013 2013 IEEE Wireless Communications and Networking Conference (WCNC)  
In this paper, we propose multi-carrier code division multiple access (MC-CDMA)-aided space-time shift keying (STSK) for mitigating the performance erosion of the classic STSK scheme in dispersive channels  ...  We propose a new receiver architecture amalgamating the single-stream maximumlikelihood (ML) detector of the STSK system and the multiuser detector (MUD) of the MC-CDMA system.  ...  ACKNOWLEDGMENT The authors would like to thank the Commonwealth Scholarship Commission in the UK for the financial support of this work.  ... 
doi:10.1109/wcnc.2013.6554979 dblp:conf/wcnc/KadirS0H13 fatcat:jrzashwjtfeltffkyn4rkre3fu
« Previous Showing results 1 — 15 out of 750 results